Consider three identical flasks with differ- ent gases: Flask A: CO at 760 torr and 273 K Flask

Name: Problem 91, Chapter 3: Advanced Problems in Physical Chemistry for Competitive Examinations
Uploaded: 2021-07-13T04:21:56-08:00
Duration: 1 min 13 s
Channel: Alkendra Singh
Description: Consider three identical flasks with differ- ent gases: Flask A: CO at 760 torr and 273 K Flask B: N2 at 250 torr and 273 K Flask C: H2 at 100 torr and 273 K In which flask will the molecules have the greatest average kinetic energy per mole? (a) A (b) B (c) C (d) same in all

step 1 We have three identical flas with different gases and a B, flask A have CO gas and two and the c

Question

Consider three identical flasks with differ- ent gases: Flask A: $\mathrm{CO}$ at 760 torr and $273 \mathrm{~K}$ Flask $\mathrm{B}: \mathrm{N}_{2}$ at 250 torr and $273 \mathrm{~K}$ Flask $\mathrm{C}: \mathrm{H}_{2}$ at 100 torr and $273 \mathrm{~K}$ In which flask will the molecules have the greatest average kinetic energy per mole? (a) $\overline{\mathrm{A}}$ (b) $\underline{B}$ (c) $\mathrm{C}$ (d) same in all

   Consider three identical flasks with differ-
ent gases:
Flask A: $\mathrm{CO}$ at 760 torr and $273 \mathrm{~K}$
Flask $\mathrm{B}: \mathrm{N}_{2}$ at 250 torr and $273 \mathrm{~K}$ Flask $\mathrm{C}: \mathrm{H}_{2}$ at 100 torr and $273 \mathrm{~K}$ In which flask will the molecules have the greatest average kinetic energy per mole?
(a) $\overline{\mathrm{A}}$
(b) $\underline{B}$
(c) $\mathrm{C}$
(d) same in all

Advanced Problems in Physical Chemistry for Competitive Examinations

Neeraj Kumar 2015 Edition

Chapter 3, Problem 91

Instant Answer

Solved by Expert Alkendra Singh

07/13/2021

Step 1

Step 1: The average kinetic energy per mole of a gas is given by the equation: \[ KE = \frac{3}{2}nRT \] where $ n $ is the number of moles, $ R $ is the gas constant, and $ T $ is the temperature. Show more…

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Consider three identical flasks with differ- ent gases: Flask A: $\mathrm{CO}$ at 760 torr and $273 \mathrm{~K}$ Flask $\mathrm{B}: \mathrm{N}_{2}$ at 250 torr and $273 \mathrm{~K}$ Flask $\mathrm{C}: \mathrm{H}_{2}$ at 100 torr and $273 \mathrm{~K}$ In which flask will the molecules have the greatest average kinetic energy per mole? (a) $\overline{\mathrm{A}}$ (b) $\underline{B}$ (c) $\mathrm{C}$ (d) same in all

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Key Concepts

Kinetic Theory of Gases

This concept explains that the behavior of gas molecules, including their speeds and kinetic energies, is governed by statistical principles. According to the kinetic theory, the average kinetic energy of gas molecules is directly linked to the absolute temperature of the system, regardless of the type of gas present.

Temperature Dependence of Average Kinetic Energy

The average kinetic energy per molecule in a gas is given by (3/2)kT (or (3/2)RT per mole), which shows that it depends solely on the temperature measured in Kelvin. This means that at a constant temperature, different gases will have the same average kinetic energy even if other conditions like pressure vary.

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